Treatment of animal fibers and product thereof



Patented June 3, 1930 UNITED STATES PATENT OFFICE. I

ARNOLD DOSER, OF COLOGNE-MULHE IM, GUSTAV MAUTHE, 015 COLOGNE-HOLWEIDE,

AND ALFRED THAUSS, OF OOLOGNE-DEUTZ, GERMANY, ASSIGNORS TO GENERAL AN ILINE WORKS, IN 0., NEW YORK, N. Y., A CORPORATION OF DELAWARE TREATMENT OF AN IMAL FIBERS AND PRODUCT THEREOF No Drawing. Application filed January 19, 1929, Serial No. 333,742, and in Germany January 25, 1928.

Our present invention relates to a process sulfate, to which are also added of subjecting animal fibers to the action of resist compounds having the property of preventing the animal fibers from taking up substantive dyestuffs, more particularly it relates to a process which comprises incorporating with animal fibers a water soluble product being obtainable by reacting with an aralkyl halogenide upon a compound of 10 the group comprising recent resins (for in stance resins of acidcharacter, such as colophony, shellac and the, like) and condensation products of the resins with phenols in the presence of a suitable dehydrating agent, such as zincchloride, at a temperature between about 100200 C., and sulfonating the products thus obtainable.

We have found that these products, or also the corresponding products from mixtures of recent resins of different origin, possess in the free form as well as 1n the form of their alkali metal salts the valuable technical property of preventing animal fibers, such as wool, silk and the like, from the taking up of substantive dyestuffs. The incorporating of our resists with animal fibers may be performed from their neutral or weakly acid or alkaline aqueous solutions, advantageously in the manner of a dyeing process. In this latter case, especially for the production of multi color effects in mixed textile fabrics, made for instance of wool and cotton or of silk and cotton and the like, it is possible to combine the process of applying the resists tothe fibers with the dyeing process; the wool or the silk are in all these cases protected against the taking up of substantive dyestuffs to a far reaching extent.

The following examples illustrate our invention, without limiting it thereto Ewample 1.-In a mixed fabric of cotton and wool the latter is dyed with 1% of orange II (Schultz, Farbstofi'tabellen 1923,

1. page 55, No. 145) with the addition of 10% of sodium sulfate and of 3% of sulfuric acid. -The fabricis then introduced into a bath containing 2% of brilliant benzo blue 6 B (Schultz, Farbstofl'tabellen 1023,

I. page 135, No. 424) and 30% of sodium rating with animal fibers a 5% of the sodium salt of the sulfonic acid, obtainable by reacting with 3 parts of benzylchloride in the presence of 0.2 parts of zinc-chloride and at a temperature of about 110 to 120 C. upon 10 parts of the condensation product prepared by heating a mixture of 30 parts of colophony and 10 parts of phenol with 1.5 parts of sulfuric acid of B at a temperature of about 70 to 80 C. for about ,8 hours, until the evolution of gas has ceased, and sulfonating the condensation product with 2 parts of a 100% sulfuric acid. The fabric is left in this base for 1 hour at 50 C. Thesubstantive dyestuif leaves the wool almost uncolored.

E trample 2.'l e dyeing of the WOOl is carried out as in v,Example 1, but there are added in this caseto the dye bath solution of the substantive dyestufi' 5% of the sodium salt of the sulfonic acid, obtainable by heating 150 parts of 'colophony and 50 parts of phenol to about 70 0., adding then 2 parts of sulfuric acid of 60 B, raising the temperature to 110 C., adding 1.5 parts of zinc 7 chloride and 67 parts of benzylchloride and keeping the reaction mixture at a temperature of about 110 to 120 C. until the development of gas has ceased, and finally sulfonating the product by removing the water formed, mixing with 200 parts 0f'tet rachloroethane at 70 C., gradually adding 150 parts of sulfuric acid of 100% strength, whereby the temperature is slowly lowered to 45 C. and stirring the melt for some hours at this temperature. The wool is even less colored as in Example 1.

We claim 1. The process which comprises incorpoproduct being obtainable by reacting with an aralkyl halo genide upon a compound of the group comprising recent resins and condensation products of recent resins with phenols, in the presence of zincchloride at a temperature between about -200 C., and sulfonating the product thus obtainable.

2. Animal fibers ,having incorporated therewith a product being obtainable by reacting with an aralkyl halogenide upon a "100 compound of the group comprising recent resins and condensation products of recent resins with phenols, in the presence of zinc v chloride at a temperature between about 100-200 -C., and sulfonating th-product thus obtainable. V

3. The process which comprises incorporating with animal fibers a product obtainable by reacting with benzylchloride upon the condensation product prepared from -c0lophony and phenol in the presence of zinc chloride at a temperature of 110 to 120 C., and sulfonating the product thus obtainable.

A. Animal fibers having incorporated therewith a product obtainable by reacting with benzylchl'oride upon the condensation product prepared from coloph'ony and phenol in the presence of zinc chloride at a temperature of 110 to 120 0., and sulfonating the product thus obtainable.

In testimony whereof we have hereunto set our hands.

ARNOLD DOSER. [1 s.] GUSTAV MAUTHE. [L. s.]

ALFRED THAUSS. [L. s.]- 

